@Subhransu: Your description and new example still leave open the
question of whether "repetative" means "occurs exactly twice" or
"occurs twice or more." So, does A(1,2,2,3,3,3) fall within or without
your intended problem? If "occurs exactly twice" is your meaning, then
the xor method proposed by Gunjan Sharma is a solution.

Dave

On Apr 16, 1:27 pm, Subhransu <[email protected]> wrote:
> Rephrasing the array to reflect one non-repetative element. Inconvenience
> regretted.
> A{1, 1024, 2 , 1, 2, *3*, 4, 4, 1024}.
> Now there only one non-repetative element "3"...
>
> *Subhransu Panigrahi
> *
> *Mobile:* *+91-9840931538*
>  *Email:* [email protected]
>
> On Sat, Apr 16, 2011 at 11:39 PM, sravanreddy001
> <[email protected]>wrote:
>
>
>
> > @shadow.. your approach fails if the same number has odd number of
> > occurances...
>
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